$($Portfolio beta and$$ CAPM$)$You are putting together a portfolio made up of four different stocks. $$ However, you are considering two possible$$ weightings:$$LOADING$....$

a$.$What is the beta on each$$ portfolio?

b$.$Which portfolio is$$ riskier?

c$.$If the$$ risk$-$free rate of interest were $3\mathrm{.}5$ percent and the market risk premium were $5\mathrm{.}5$ percent$,$ what rate of return would you expect to earn from each of the$$ portfolios?